KR20030042354A - Fan and housing assembly of an air conditioner - Google Patents

Abstract

PURPOSE: A fan and housing assembly for an air conditioner is provided to remove noise or abnormal vibration generated due to fluctuation of air by preventing a protrusion from being formed in an air path of a housing. CONSTITUTION: A fan and housing assembly includes a housing(100) accommodating a motor and a blowing fan. A bell mouth(40) is installed in an air suction hole(102) of the housing(100) in order to guide air and to shield noise caused by air to be sucked. A discharging duct(106) is formed in the housing(100) so as to discharge air towards an evaporator. Instead of forming a hook in the bell mouth(40), a plurality of hooks(30) is arranged at an outer portion of the housing(100) so as to support the bell mouth(40). A coupling hole is formed in the housing(100) in order to fix the bell mouth(40) to the housing(100) by using a coupling device, such as a bolt.

Description

Blower assembly for air conditioner {FAN AND HOUSING ASSEMBLY OF AN AIR CONDITIONER}

The present invention relates to a blower assembly for an air conditioner, and more particularly, a plurality of hooks are formed on the edge of the air suction hole of the housing to which the bell mouse is assembled, so that the outer edge of the bell mouse is formed on the housing during assembly. The present invention relates to a blower assembly for an air conditioner of a type in which a bolt is coupled and fixed at a predetermined position after insertion into a hook.

In general, since the interior space of a building is contaminated by internal factors such as occupants' breath, it is necessary to periodically supply fresh air from the outside. In addition, in hot summer or cold winter, the room should be cooled and heated to an appropriate temperature, and the proper humidity is maintained to be suitable for people's activities. To this end, most buildings are equipped with air conditioners.

A typical air conditioner is an air conditioner that cools a room by using a phenomenon of absorbing heat when surrounding liquid evaporates. The air conditioner consists of a compressor for compressing the refrigerant into a gas of high temperature and high pressure, a condenser for liquefying the compressed high temperature and high pressure refrigerant, and an evaporator for evaporating the refrigerant expanded by the expansion valve. Air is forcedly blown into the room where cooling is required by the blower fan in the blower assembly.

1 shows a blower assembly embedded in an indoor unit or the like of a package air conditioner.

The blower assembly is mounted inside the main body of the indoor unit to suck air from the indoor air, and is mounted inside the motor and a blower fan mounted on the rotating shaft of the motor to suck the indoor air. Wrapped The housing 10 has a circular air suction hole 12 and a discharge duct 18, and the air suction hole 12 of the housing 10 induces air intake and at the same time by intake airflow. It consists of a bell mouth (20) to block out noise. The air inlet part 22 of the bell mouse 20 has a streamlined structure that is bent inwardly so as to stably guide the air introduced into the housing 10 to the inside of the blowing fan. The indoor air is pumped toward the evaporator through the air inlet hole 21 of the bell mouse 20.

In addition, in order to mount the bell mouse 20, as shown by the hidden line, a plurality of rectangular locking holes 14 are formed in the circumference of the air suction hole 12 of the housing 10, and the locking holes 14 are provided. As shown in Figs. 2 and 3, the L-shaped hook 24 formed on the surface of the bell mouse 20 disposed inside the housing 10 is engaged.

At the time of assembly, the bell mouse 20 is positioned near the air suction hole 12, and the hook mouse 20 is inserted into the hook hole 14 formed in the housing 10. The bell mouse 20 is rotated in a predetermined direction until the through hole 24 and the fastening hole 16 formed therein coincide with each other. Next, a fastening means such as a bolt passes through the through hole 24 of the bell mouse 20, and then engages with the fastening hole 16 of the housing 10, and thus, as shown in FIGS. 4 and 5. 20).

In the blower assembly for a conventional air conditioner having such a configuration, as shown in FIG. 4, a protrusion is formed in the air flow path by a plurality of hooks 24, and the housing 10 is shown in FIG. 5. The gap (ℓ) is generated in the assembly portion between the upper surface (10a) of the hook and the hook 24 of the bell mouse 20, the abnormal noise is generated in the process of leaking air through the gap (ℓ) There is a problem that quietness is lowered.

The present invention for solving this problem by changing the assembly method of the bell mouse so that the protrusion caused by the hook does not occur on the air flow path in the housing, eliminating the protrusion and the resulting gap to remove noise and abnormal noise due to air fluctuations It is an object of the present invention to provide a blower assembly for an air conditioner.

1 is a front view showing a conventional blower assembly.

Figure 2 is a plan view showing a conventional bell mouse.

3 is a cross-sectional view taken along the line A-A of FIG.

Figure 4 is a side view showing a conventional blower assembly.

5 is a cross-sectional view taken along the line B-B in FIG.

6 is a front view showing the blower assembly of the present invention.

7 is a plan view of a bell mouse employed in the present invention.

8 is a cross-sectional view taken along the line C-C in FIG.

Figure 9 is a side view showing a blower assembly of the present invention.

10 is a cross-sectional view taken along the line D-D of FIG.

* Description of the symbols for the main parts of the drawings *

30: Hook 40: Bellemouth

41: air inlet hole 42: air inlet

46: through hole 100: housing

102: air suction hole 106: duct

116: fastener

Blower assembly for an air conditioner of the present invention for achieving the above object is a motor operated by the supply of external power, a blower fan mounted on the rotating shaft of the motor to suck air, a circular air suction hole and discharge duct A blower assembly for an air conditioner, comprising: a formed housing, and a bell mouse installed at an air suction hole of the housing to induce the suction of air and to block noise caused by the intake airflow, wherein the housing around the air suction hole is provided. A plurality of hooks and fastening holes are formed at an outer side thereof, and a bell mouth mounted to the air suction hole provides a blower assembly for an air conditioner, wherein a through hole corresponding to the fastening hole is formed.

Hereinafter, a blower assembly for an air conditioner according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 6 to 10.

Figure 6 is a front view showing the blower assembly of the present invention, Figure 7 is a plan view of the bell mouse employed in the present invention, Figure 8 is a cross-sectional view taken along line CC of Figure 7, Figure 9 is a side view showing the blower assembly of the present invention and DD line sectional drawing of FIG.

First, as illustrated in FIG. 6, for example, a blower assembly mounted on an indoor unit of a package air conditioner and the like to forcibly blow indoor air toward an evaporator includes a housing 100 forming an overall appearance while protecting an internal motor and a blower fan. In addition, the air suction hole 102 of the housing 100 is equipped with a bell mouse 40 for inducing air suction and blocking noise caused by the intake airflow. The housing 100 is provided with a discharge duct 106 for pumping the sucked air toward the evaporator together with the circular air suction hole 102 into which the air is sucked.

In the blower assembly having such a configuration, in the preferred embodiment of the present invention, in order to prevent the protrusion and the resulting gap from forming on the air flow path in the housing 100, the conventional method of forming hooks in the bell mouse 40 and the like. In contrast, the coupling structure for supporting the bell mouse 40 formed a plurality of hooks 30 on the outside of the housing 100 was adopted. In addition, in the housing 100, a fastening hole 116 is formed at a predetermined position of the air suction hole 102 to fix the bell mouse 40 by using a fastening means such as a bolt after being engaged with the hook 30. .

Meanwhile, as shown in FIGS. 7 and 8, the bell mouse 40 mounted in the air suction hole 102 of the housing 100 has a through hole 46 corresponding to the fastening hole 116 of the housing 100. ) Is formed. The air inlet 42 of the bell mouse 40 has a streamlined structure that is bent inwardly to guide the air introduced into the housing 100 to the inside of the blowing fan stably. The indoor air is pumped toward the evaporator through the air inlet hole 41 of the bell mouse 40.

Next, as shown in Figure 9 and 10, during assembly, the edge of the bell mouse 40 is inserted into a plurality of hooks 30 formed in the housing 100, and then fastening means such as bolts or screws After passing through the through hole 46 of the bell mouse 40 and fastening to the fastening hole 116 of the housing 100, the bell mouse 40 can be firmly fixed to the housing 100.

The hook 30 employed in the present invention is bent at a right angle toward the outer direction of the housing 100, and is integrally formed in the main body of the housing 100 by a blanking method.

According to the present invention described above, instead of the conventional method in which the hook is formed on the bell mouse to be coupled to the housing, a plurality of hooks are formed on the edge of the air suction hole of the housing to which the bell mouse is to be assembled, so that the bell After inserting the outer edge of the mouse into the hook formed in the housing and fixed by bolting at a predetermined position, by removing the protrusion and the assembly gap on the air flow path can remove the noise and abnormal noise due to the air flow can improve the quietness There is an advantage.

Claims (3)

A motor operated by supply of an external power source, a blower fan mounted on a rotating shaft of the motor to suck air, a housing having a circular air suction hole and a discharge duct formed therein, and an air suction hole of the housing to suck air In the blower assembly for an air conditioner comprising a bell mouse to induce a noise and at the same time block the noise caused by the intake air flow, A plurality of hooks and fastening holes are formed on an outer side of the housing around the air suction hole, and a through hole corresponding to the fastening hole is formed in the bell mouse mounted to the air suction hole. The blower assembly of claim 1, wherein the hook is bent at an approximately right angle toward the outside of the housing. The air conditioner blower according to claim 1, wherein the edge of the bell mouse is inserted into the hook of the housing, and is firmly fixed to the housing by a bolt which penetrates the through hole and is fastened to the fastening hole. Assembly.